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Old 28th Dec 2021, 7:12 am   #20
Phil G4SPZ
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Join Date: Apr 2005
Location: Bewdley, Worcestershire, UK.
Posts: 4,469
Default Re: Vintage 1/4 horsepower induction motor

Update: I made up a pair of ring terminals to fit the spring-loaded brush holders, wired it up adding an earth connection to the frame, and slowly applied mains power via my variac. At about 40 volts it slowly started to rotate - it works! The centrifugal starting switch cuts out at an estimated 700 RPM and the motor runs up to full speed at anything from 100 volts upwards.

I still haven’t found any references to this design of motor. There can’t be many still around.
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